Bolting-machine.



PATENTED JULY 9 1907.

E. GLARNLLR. BOLTING MAGHINE. APPLIGATION FILED [A125, 1907.

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UNITED STATES PATENT OFFICE.

EDUARD GLARNER, OF GOSSAU, SWITZERLAND, ASSIGNOR TO THE FIRM OF F.GLARNER, OF GOSSAU, SWITZERLAND.

BOLTING-MACHINE Specification of Letters Patent.

Patented July 9, 1907.

Application filed March 25, 1907. $erial No- 364,502.

To all whom it may concern:

Be it known that I, EDUARD GLAR'NER, a citizen of the Swiss Republic,and a resident of Gossau, canton of St. Gall, Switzerland, have inventednew and useful Improvements in Bolting-Machines, of which the followingis a clear, full, and exact specification.

This invention relates to twin horizontal bolting machines, in which theequalization of the mass is effected by a single counterpoise. Inexisting horizontal bolting machines of this kind, in which thecounterpoise between the two sets of screens is adapted to moveapproximately at the center of their height, the driving power is mostlytransmitted to the screens by carrying them in box frames, upon whichthe power acts laterally. The use of such box frames is attended withconsiderable disadvantage. In the first place with such box frames, theremoval and insertion of the screens is effected by sliding them upfrom, or down into, the box frames, which is inconvenient andtroublesome in practice, and also necessitates an exactly horizontalinsertion of the screen frames. Then again, access to the inner parts ofthe machine is considerably interfered with by the box frames.

These faults are completely removed in horizontal bolting machinesconstructed according to my invention, inasmuch as by the employment ofa single c0m pensating weight and by a special mode of constructing thescreen and its moving part it is possible to dispense with the frameround the screen. In my new horizontal bolting machine, the drivingpower is applied through a floor-frame which is placed under all thescreens and serves as a platform therefor and which, for this purpose,is provided with a connecting piece, which starting from thefloor-frame, is bent at right angles in the form of a stirrup betweenthe two sets of screens so as to locate the pin of the driving crank andthe compensating weight in the same horizontal plane of center ofgravity as the revolving masses. For the reason that the driving of thescreens is effected through a bottom-platform and that a box-like construction is dispensed with, all the screens can be laid free upon theplatform, or be lifted from it, and when the screens are removed theinterior of the machine is everywhere easily accessible.

The appended drawing illustrates a suitable form of construction inwhich the platform or bottom-frame is suspended 'by hangers. Theinvention is, however, applicable to horizontal bolting machines inwhich the platform or bottom-frame is supported by stays.

Figure l is a vertical section through the middle portion of thefloor-frame and the driving mechanism of the machine, one of the sets ofscreens being shown in elevation. Fig. 2 is a plan of the machine. Fig.3 shows half the machine in end elevation.

a is the platform or floor-frame, on which the screens 8 are arrangedone above another at two points placed symmetrically with respect to thecentral axis of the machine, and which is suspended so as to be able tooscillate from vertical pillars c by means of hangers or rods b thelength of which is adjustable in the usual way. These suspending rods bare attached to the platform a inside or between the two sets ofscreens, thus increasing the accessibility of the screens. The platforma with the screens 8 which it carries has a horizontal oscillatorymotion imparted to' it in the usual way, in this case from a centraldriving shaft d provided with a belt pulley, the shaft having itsbearing in the bearing support a and above the platform a carrying thefly-wheel f with the counterpoise g, which is the only one in themachine. This fiy-wheel the horizontal center of gravity of whichcoincides with those of the masses which receive the impulse and rotatein a circular path, contains also the bearing for the crank pin h whichserves to drive the platform a, and is carried by a cross frame orbridge 1' which rises between the screen frames and forms the connectingpiece hereinbefore referred to. This cross frame 1' is bent upwards atright angles or into the form of a stirrup, in such a way that it ispossible when the driving power acts upon the platform a to shift thepoints of impulse of the centrifugal forces of the rotating masses whichare in equilibrium in the crank bearing into the common horizontal planeof gravitation of the latter, and so to avoid the production of a coupleof forces or torque in the vertical plane. All this applies especiallyto cases in which only one fly wheel and counterpoise are used, and onlyone platform or'main frame, which lies under all the screens. The screenand collecting frames 3 may be of any construction preferred.

The improvement in the horizontal screening ma chine described thusconsists in the fact that in consequence of the mode of driving setforth it is possible to attain a perfect counterbalancing of the masswith a sin- I gle counterpoise, and thereby to transfer the drive to aplatform arranged under all the screens so that box frames whichsurround the screens and impede their handling are avoided. This hasproved in practice to be a great advantage for insuring regularity ofworking, and especially for handling the machine when at work. Theseparate screen frames may simply be laid free upon the platform andneed not as in other methods of construction be partly raised from belowand then by means of an auxiliary floor the operation be completed by ascrew, or, as in constructions of the box form, be laid in the'boxes inan exactly horizontal position from above. named form of apparatus twoare, always required for the proper insertion and removal of thescreens, while This saves the labor of a man, since in the last theplacing of all the screens upon a platform can be effected by one man.

What I claim is:

In a twin horizontal bolting machine, the combination with two sets ofscreens a driving crank and a single counter-poise for counterbalancingthe masses, of a platform or floor-frame arranged under all the screensand carrying them and a connecting piece between said platform and thedriving crank, this connecting piece, starting from the platform, beingbent upward in the form of a stirrup between the two sets of screens so.as to locate the pin of the said driving crank and the saidcounterbalancing weight in tlie same horizontal plane of gravity us therotating masses, for the purpose of causing the driving of the screenseatings to be effected, with a platform and thus avoiding box frames,substantially as hereinbefore described.

In witness whereof, I have hereunto signed my name in the presence oftwo subscribing witnesses.

EDUARD GLARNER.

Witnesses:

GEO. GIFFORD, AMAND BRAUN.

